be.ac.ulg.montefiore.run.totem.domain.diffserv
Class MAMModel

java.lang.Object
  be.ac.ulg.montefiore.run.totem.domain.diffserv.MAMModel

All Implemented Interfaces:

DiffServModel

public class MAMModel
extends java.lang.Object
implements DiffServModel

Implements the Maximum Allocation Bandwidth Constraints Model (MAM). See RFC 4125.

Creation date: 7/01/2008

Author:

Gaël Monfort (monfort@run.montefiore.ulg.ac.be)

Method Summary

boolean	checkConstraints(Domain domain, float[] bc, float mrbw) Every bandwidth constraint should be inferior or equal to the maximum reservable bandwidth
static MAMModel	getInstance()
float[]	getReservableBandwidth(Domain domain, float[] bc, float[] reservedBwArray, float mrbw) Computes the reservable bandwidth array in the following way:
float	getReservableBandwidth(Domain domain, int priority, float[] bc, float[] reservedBwArray, float mrbw) Returns the reservable bandwidth at a given priority level given the constraints and the reserved bandwidth.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

getInstance

public static MAMModel getInstance()

checkConstraints

public boolean checkConstraints(Domain domain,
                                float[] bc,
                                float mrbw)

Every bandwidth constraint should be inferior or equal to the maximum reservable bandwidth

Specified by:

checkConstraints in interface DiffServModel

Parameters:

domain -

bc -

mrbw -

Returns:

getReservableBandwidth

public float[] getReservableBandwidth(Domain domain,
                                      float[] bc,
                                      float[] reservedBwArray,
                                      float mrbw)

Computes the reservable bandwidth array in the following way:

 "Unreserved TE-Class [i]" =
    MIN  [
      [ BCc - SUM ( Reserved(CTc,q) ) ] for q <= p  ,
      [ Max-Res-Bw - SUM (Reserved(CTb,q)) ] for q <= p and 0 <= b <= 7,
    ]

 where:
     TE-Class [i] <--> < CTc , preemption p>
     in the configured TE-Class mapping.
 

Specified by:

getReservableBandwidth in interface DiffServModel

Parameters:

domain -

bc -

reservedBwArray -

mrbw -

Returns:

getReservableBandwidth

public float getReservableBandwidth(Domain domain,
                                    int priority,
                                    float[] bc,
                                    float[] reservedBwArray,
                                    float mrbw)

Returns the reservable bandwidth at a given priority level given the constraints and the reserved bandwidth. The reservable bandwidth in computed the following way:

 "Unreserved TE-Class [i]" =
    MIN  [
      [ BCc - SUM ( Reserved(CTc,q) ) ] for q <= p  ,
      [ Max-Res-Bw - SUM (Reserved(CTb,q)) ] for q <= p and 0 <= b <= 7,
    ]

 where:
     TE-Class [i] <--> < CTc , preemption p>
     in the configured TE-Class mapping.
 

Specified by:

getReservableBandwidth in interface DiffServModel

Parameters:

domain -

priority - <

bc - Array of bandwidth constraints, indexed by the constraint number

reservedBwArray - Array representing the reserved bandwidth at each of the priority level

mrbw - Maximum reservable bandwidth

Returns:

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object